Disk-grinder.



E. BATTERMAN.

DISK GRINDER.

APPLICATION FILED SEPT. 19. I916.

Patented. Jan. 23, 1917.

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DISK GRINDER.

APPLICATION mzo sum :9. 191a.

Patented J an. 23, 1917.

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E. BATTERMAN.

DISK GRINDER.

APPLICATION FILED SEPT. 19, I9I6.

P 83%? Patented Jan. 23, 1917.

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DISK-GRINDER.

Specification of Letters Patent.

Patented Jan. 23, 121W.

Application filed September 19, 1916. Serial No. 120,985.

To all whom it may concern:

Be it known that I, EDWARD BATTERMAN,

a citizen of the United States, residing at Hobart, in the county of Lake and State of Indiana, have invented new and useful Imgrinder wheel, so as to vary the relationship of the parts according to the diameter and thickness of the disk, and the pitch or arrangement of the edge of the disk with respect to the grinding wheel, as well as to compensate for irregularities in the surface of the edge of the disk to obtain an even and efificient grinding action, and to provide for the rotation of the grinding wheel and disk at different relative speeds to regulate the grinding action as desired and prevent overheating of the disk.

A still further object of the invention is to provide a grinding apparatus embodying means for effecting the desired adjustments in a ready and convenient manner.

The invention consists of the features of construction, combination and arrangement of parts hereinafter fully described and claimed, reference being had to the accompanying drawings in which Figure 1 is a side elevation of a disk grinding apparatus embodying my invention. Fig. 2 is a front elevation of the same. Fig. 3 is a top plan view. Fig. l is a vertical transverse sectionon line H of Fig. 3. Fig. 5 is a vertical transverse section on the line 5-5 of Fig. 3. Fig. 6 is a vertical longitudinal section on the line 6-6 of Fig. 3.

In carrying my invention into practice provide a grinding apparatus including a main frame 1 and a grinder supporting frame 2, which frame 2 is provided at a point adjacent but in advance of its rear end with a transverse rod or axle 3 journaled in bearing brackets 4, whereby said grinder frame is mounted to tilt vertically upon the main frame. At its forward end the grinder frame is provided with suitable bearings 5 for a transverse grinder shaft or arbor 6 on which is mounted a pulley 7 connected by a belt 8 with a drive pulley 9, whereby said shaft is driven. One end of the shaft or arbor 6 carries a grinding wheel 10, composed of emery or other suitable material, and provided with a hub or sleeve 11 adapted to be fitted upon the shaft and secured 1n position by a washer 12 and clamping nut 13. The shaft and wheel hub are squared or otherwise suitably connected to fix the wheel to the shaft for rotation therewith, the construction being such that grinding wheels of different sizes or kinds may be interchangeably used. The outer or opposite end 14 of the grinder shaft is extended and may be employed in practice to receive a buffing wheel or other appliance. The drive pulley 9 is fixed to a transverse drive 'shaft 15 which is provided with fast and loose pulleys 16 and 17 to receive a drive belt from a suitable source of power. The

belt may be shifted from one pulley to the other by means of a sliding forked shifter 18 operated by a shifting lever 19 in an obvious manner. The frame 2 is pivotally mounted in close proximity to the drive shaft 15, so that the forward end of said frame may have a considerable degree of tilting motion, with a minimum degree of tilting motion of the rear end of said frame.

The shaft 15 is mounted in bearings 20 suitably journaled and adjustably mounted upon the main frame 1 and adapted for adjustment by screws 21 carried by brackets 22, whereby said shaft may be adjusted with relation to the shaft 11 to take up any slack in the belt 8. The brackets 22 are reinforced from the main frame by suitable stays 23. On the shaft 15 is a worm 24 meshing with a gear 25 on a longitudinally extending transmission shaft 26, for transmitting motion to the disk carrier or supporting head 27.

The head 27 is detachably mounted upon the upper end of a vertical disk driving shaft 28, which is journaled at its upper end in a movable bearing member 29 and at its lower end in a movable bearing member 30. The upper end of said shaft is reduced to receive'thehead27 and is threadedtoreceive a clamping nut 31, whereby the disk- 32 to be ground is clamped in position against the head, a coiled spring-'33 b'eingdispo'sed between the nut and disk to yieldingly back the latter, thus allowing the disk to have a certain degree of yielding vertical play or motion to maintain it in: contact with the grinding wheel, while compensating, for any irregularities of surface on the disk to be reduced bythe grindingaction. The bearing 30fis carriedby a swinging yoke 34t overheated. Thev gear :39 is slidably mounted, upon: an; angular'portion, l0 of the shaft 36.and isconnected with an adjusting lever 4-1 which slidably and pivotally engages a pivot bolt 42, the. pinion being adjustable by means ofsaidlever entirely outof ens gagement with: the gear 38 or into engagement with, any of its toothed faces in a mannerreadily understood; The lever is adapted to, engage any one of a series of notches 43' in a locking-plate-t l to maintain in any.

of' its; adjustedposition's, and a spring 45 isprovideduponthebolt 42 for cooperation with. a retaining nut 46 whereby lockmg and releasing movements of the lever is permitted' ina manner, readily understood.

Carried by the main frame is a bracket l'Z which supportsan internally threaded bearing member or nutAS through, which extends and in which operates a threaded rod. or screw. 49- having' at its outer end an actuating handle 50-. The inner end of this screw, whichis cylindrical and plain-surfaced, is telescopically connected with the bearingmember 29', and inclosing said plainsurfaced cylindrical-portion of the screw rod jor shaft is a coiled spring51. backed by an-adlllstable abutment or nut 52 whereby a yielding motion transmitting connection between the said bearing-member 29 and-the screwrod-or shaftjis affordedw From this it will gbeiseenthat by adjusting the screw rod or shaft, agrinder head carrying the disk may beadjusted. toward and from the 1 grindingwheel, to suit different diameters of disks, as well as to; provide; for-the adjustment of thediskwithrelation to the surface of, the i wgrindingwheel to 'pitchorJdi'spose the disk forrtheo grindingof a proper baffle, it being understood; that. the spring connection permits thediskzto vibrate. back-and forth-,

while yieldingly holding it to its work, so that irregular and unusual hard surfaces may be compensated for and a gradual and uniform grinding action secured.

Asshown, particularly in Fig. 6, the forward end of the grinder wheel frame is pro- *vided with a supporting plate or bracket 53 which slidably receives the upper end 01? a supporting rod 5a having its lower portion provided with spiral or worm threads, the lower end of said rod being journaled and slidably. mounted in the frame 1 and extending through a bracket 56, between whichbracket and the underlying portion ofthe frame is arranged an adjusting wheel 57 having a threaded hub engaging said shaft, whereby through reverse movements of said wheel the rodmay be raised or lowered.v Surrounding the rod between the bracket 58 and the bracket 56 is a coiled spring 58 which serves as the immediate support of the forward end of the frame 2, allowing said support to have vertical pivotal motion to adjust the grinding wheel up and down, and also adapt it to haveyielding motion so that, through the yielding motions of the-grindingwheel and disk undue harshness of action will be avoided and the grinding action evenly and smoothly effected. It will be observed that by raising and lowering the rod the tension of the spring will be varied to regulate the supporting and pressure actions accordingly.

In the operation of the device, the disk to be sharpened is fitted upon the threaded upper end of the shaft 28 and yieldingly secured in position by theclamping nut 31 and spring 38, this spring permitting the disk to have independent yielding motionfor the purpose heretofore set forth. The grinder head and grinding wheel are then adjusted to properly dispose the edge of the disk with relation to the periphery of the wheel for a grinding action and the machine is then set in motion whereby the grinding wheeland disk will be'simultaneously rotated in peripheral contact with each other, resulting in the grinding of the disk at the proper angle'and t0 the proper degree.

It will of coursebe understood that by means of the adjusting members described the grinding pressure on the disk'may be varied, while the disk andwheel arepermitted to have independent relative yielding motions in variousdirections to adapt the stone tocut or smooth down the disk evenly and uniformly within a minimum period of time. Furthermore, the parts may be manually adjusted at intervals as the disk-is ground and until the disk is ground to the desired degree.

It will'be seen that the device admits of the grinding of disks of: different diameters and different pitches or 'bevels of cutting amps? W surfaces, as well as rotation of the disk at any one of a number of speeds desired without varying the speed of the grinding Wheel, thus enabling the grinding action to be thoroughly controlled.

By the use of the machine a cultivator and other like disk may be ground in a rapid, convenient and economical manner, as will be readily understood.

1 claim 1. A disk grinding machine including a grinding shaft, a grinding wheel carried by the shaft, means for yieldingly supporting said shaft, a disk carrying shaft, means for yieldingly supporting said shaft with relation to the grinder shaft, and means for yieldingly supporting the disk upon the disk carrying shaft.

2. A grinder machine including a main frame, a vertically movable frame supported by the main frame, means for vertically adjusting and yieldingly supporting the vertically movable frame, a grinding shaft carried by the vertically movable frame, a grinding wheel mounted upon said shaft, a vertical disk supporting shaft, and means for yieldingly supporting said shaft for movement toward and from the grinding shaft.

3. A disk grinder machine including a horizontal, vertically movable grinding shaft, means for adjustably and yieldably supporting said shaft, a grinding wheel carried by the shaft, a vertical shaft mounted for movement toward and from the grinding Wheel, a disk carrying support upon said vertical shaft, and means for adjusting and yieldably supporting the vertical shaft.

4:. A disk grinding machine including a horizontal vertically movable grinding shaft, means for adjustably and yieldably supporting said shaft, a grinding wheel upon the grinding shaft, a vertically disposed disk carrying shaft, means for supporting a disk thereon for peripheral contact with the grinding wheel, an adjusting device engaging said vertical shaft for adjusting the same toward and from the disk grinding shaft, and means associated with said adjusting shaft for yieldingly backing the vertical shaft.

In testimony whereof I affix my signature.

EDWARD BATTERMAN.

topics of this patent may be obtained for five cents each, by addressing the Commissioner of Patenta, Washington, D. G. 

